diff --git a/xen/arch/x86/cpu/microcode/amd.c b/xen/arch/x86/cpu/microcode/amd.c
index eeb2a75fbe..471f6e6541 100644
--- a/xen/arch/x86/cpu/microcode/amd.c
+++ b/xen/arch/x86/cpu/microcode/amd.c
@@ -129,7 +129,8 @@ static bool check_digest(const struct container_microcode *mc)
      * the digest of the patch against a list of known provenance.
      */
     if ( boot_cpu_data.x86 < 0x17 || boot_cpu_data.x86 > 0x1a ||
-         entrysign_mitigiated_in_firmware || !opt_digest_check )
+         is_zen6_uarch() || entrysign_mitigiated_in_firmware ||
+         !opt_digest_check )
         return true;
 
     pd = bsearch(&patch->patch_id, patch_digests, ARRAY_SIZE(patch_digests),